VAT:
Quotes
  • 0
    • Electrical4less Logo
    0
    Electrical4less Reviews 4.9 Based on 1485 reviews
    UK Mainland Free Delivery £75 + VAT
    30 Day Return Policy
    Next Day Delivery Cut Off Time 3PM*

    Circuit Protection

    Circuit Protection by Brand

    Circuit Protection by Brand (1879)

    Consumer Units

    Consumer Units (448)

    Circuit Protection Devices

    Circuit Protection Devices (1058)

    EV Circuit Protection

    EV Circuit Protection (107)

    SPD Surge Protection Devices

    SPD Surge Protection Devices (121)

    Three Phase Distribution Boards

    Three Phase Distribution Boards (90)

    Switch Fuses - Isolators

    Switch Fuses - Isolators (173)

    Switch Gear

    Switch Gear (260)

    Street Lighting Circuit Protection

    Street Lighting Circuit Protection (13)

    FuseBox INC202 20A 230V 2 Pole NO Normally Open AC Modular Contactor

    FuseBox INC202 – 2 Pole 20A 2NO 230V AC Modular Contactor
    8 in stock
    More available within 2 - 3 working days *
    SKU: INC202
    £6.50
    WCED 4 Pole 230/400V 40A NO Normally Open AC Modular Contactor

    WCED WAC4P40 – 4 Pole 40A 4NO 230V AC Modular Contactor
    Delivery usually within 1 - 3 working days *
    SKU: WAC4P40
    Quantity Discount
    Quantity Price
    1 - 2 £14.99
    3+ £14.62
    5+ £14.24
    10+ £13.87
    20+ £13.49
    £14.99
    Live Electrical AFDD - 32A

    Live Electrical | AFD32B | AFDD with Type A RCBO | 6kA 30mA | B32
    2 in stock
    More available within 1 - 2 working days *
    SKU: AFD32B
    £66.14
    FuseBox F3011MZ SPD Consumer UnitF3011MZ FuseBox consumer unit with cover removed, angled to show internal layout

    FuseBox F3011MZ 11 Way RCBO Consumer Unit With SPD
    8 in stock
    More available within 2 - 3 working days *
    SKU: F3011MZ
    £58.85
    FuseBox MT06C201 20A MCB Curve C

    FuseBox MT06C201 20A MCB Curve C
    37 in stock
    More available within 2 - 3 working days *
    SKU: MT06C201
    £1.95
    Live Electrical CS3P32 Live Electrical 3 Pole 32A Changeover Switch 1

    Live Electrical CS3P32 3 Pole 32A Changeover Switch
    Delivery usually within 1 - 2 working days *
    SKU: CS3P32
    £23.90
    WCED WARB5100C/PMESP WARB5100C/PMESP 3 Phase PME Fault Detection Unit

    3 Phase PME / PEN Fault Detection Unit c/w 5 Pole 100A MCB Type 2 SPD and PME Relay
    2 in stock
    More available within 1 - 3 working days *
    SKU: WARB5100C/PMESP
    Quantity Discount
    Quantity Price
    1 £93.19
    2+ £91.33
    3+ £90.39
    £93.19
    WCED PST9 Grommet Strip for Metal Consumer Units - 0.9m

    Grommet Strip for Metal Consumer Units – 0.9m
    35 in stock
    More available within 1 - 3 working days *
    SKU: PST9
    £0.83
    Live Electrical CB140B Live Electrical CB140B 40A Curve B 10kA MCB 1

    Live Electrical CB140B 40A Curve B 10kA MCB
    11 in stock
    More available within 1 - 2 working days *
    SKU: CB140B
    £2.95
    Live Electrical CB163C Live Electrical CB163C 63A Curve C 10kA MCB 1

    Live Electrical CB163C 63A Curve C 10kA MCB
    10 in stock
    More available within 1 - 2 working days *
    SKU: CB163C
    £2.95
    Hager ARR932U Hager ARR932U AFD with 30mA RCBO 32A Curve B Type A

    Hager ARR932U AFD with 30mA RCBO 32A Curve B Type A
    8 in stock
    More available within 1 - 3 working days *
    SKU: ARR932U
    £91.50
    FuseBox F3007MZ 7 Way RCBO Consumer Unit With SPD

    FuseBox F3007MZ 7 Way RCBO Consumer Unit With SPD
    Delivery usually within 2 - 3 working days *
    SKU: F3007MZ
    £53.10
    FuseBox MT06B401 40A MCB Curve B

    FuseBox MT06B401 40A MCB Curve B
    29 in stock
    More available within 2 - 3 working days *
    SKU: MT06B401
    £1.95
    Envirograf EBU2 EnviroBurst Automatic Fire Suppression System - 300mm Long Tube 1

    EnviroBurst Automatic Fire Suppression System – 300mm Long Tube
    3 in stock
    More available within 1 - 3 working days *
    SKU: EBU2
    £36.88
    FuseBox RTA101630C FuseBox RTA101630C 16A 30mA 10kA C Curve Type A RCBO

    FuseBox RTA101630C 16A 30mA 10kA C Curve Type A RCBO
    23 in stock
    More available within 2 - 3 working days *
    SKU: RTA101630C
    £15.99
    WCED WME8 WCED 8 Way Metal Enclosure 1WCED WME8 WCED 8 Way Metal Enclosure 2

    WCED 8 Way Metal Enclosure
    1 in stock
    More available within 1 - 3 working days *
    SKU: WME8
    Quantity Discount
    Quantity Price
    1 - 4 £26.63
    5+ £25.96
    10+ £25.30
    20+ £24.63
    £26.63
    Live Electrical CB316D Live Electrical CB316D 3 Pole 16A D Curve 10kA MCB 1Live Electrical CB316D Live Electrical CB316D 3 Pole 16A D Curve 10kA MCB 2

    Live Electrical CB316D 3 Pole 16A D Curve 10kA MCB
    Delivery usually within 1 - 2 working days *
    SKU: CB316D
    £8.37
    Live Electrical CB332D Live Electrical CB332D 3 Pole 32A D Curve 10kA MCB 1

    Live Electrical CB332D 3 Pole 32A D Curve 10kA MCB
    4 in stock
    More available within 1 - 2 working days *
    SKU: CB332D
    £8.37
    WCED Whitecliffe WSPD240 Type 2 20kA/40kA SPD Surge Protection Device

    WCED Whitecliffe WSPD240 Type 2 20kA/40kA SPD Surge Protection Device
    2 in stock
    More available within 1 - 3 working days *
    SKU: WSPD240
    £17.16
    Live Electrical EMCU5-A5 Way Empty DIN Rail Metal Enclosure With Lid

    Live Electrical EMCU5-A5 Way Empty DIN Rail Metal Enclosure With Lid
    1 in stock
    More available within 1 - 2 working days *
    SKU: EMCU5-A
    £10.45

    Selection of Consumer Units, TPN Distribution Boards, Circuit Protection, Rotary Isolators, Meter Tails, Fused Switches and Accessories.

    18th Edition Consumer Units with built in SPD Surge Protection Device, stand alone SPD units, PEN loss, PME fault detection consumer units, Consumer units relocation boxes/kits, Three phase distribution boards with built in SPD and main switch.

    Thousands of products in stock ready for next day delivery. Friendly and reliable service, competitive prices.

    Circuit protection in the UK is governed by the wiring regulations outlined in the British Standard BS 7671. This standard, also known as the IET Wiring Regulations, sets out the requirements for the design, installation, and maintenance of electrical installations in the UK. Circuit protection is a crucial aspect of electrical installations to ensure the safety of people and property.

    Here are some key aspects of circuit protection according to BS 7671 and the devices commonly used in the UK market:

    1. Circuit Breakers: Circuit breakers are essential devices for protecting electrical circuits. BS 7671 specifies requirements for the selection and installation of circuit breakers. They come in various types, including:
      • Miniature Circuit Breakers (MCBs): MCBs are commonly used to protect individual circuits. They trip when there’s an overload or a short circuit.
      • Residual Current Devices (RCDs): RCDs are designed to protect against electric shock. They disconnect the circuit if they detect an imbalance in current, indicating a fault.
      • Combination RCD/MCB Devices: These devices combine the functions of both MCBs and RCDs in a single unit. They are often used for socket outlets.
    2. Fuses: While less common in modern installations, fuses may still be used for circuit protection. They work by melting when there’s an excess current, breaking the circuit.
    3. Overcurrent Protection: BS 7671 requires that circuits are protected against overcurrents. This is typically achieved through the use of circuit breakers, fuses, or other protective devices.
    4. Earthing and Bonding: Proper earthing and bonding are essential for safety. This ensures that in the event of a fault, the fault current is safely directed away from people and property.
    5. Surge Protection: Surge protection devices may be required to protect against voltage surges or lightning strikes, especially for sensitive electronic equipment.
    6. Arc Fault Detection: In certain installations, arc fault detection devices may be used to detect and disconnect circuits in the presence of dangerous arc faults.
    7. Circuit Isolation: BS 7671 also specifies requirements for circuit isolation devices such as switches and isolators.
    8. Cable Sizing: The standard provides guidelines for selecting the correct cable size to ensure that the cables can safely carry the intended load without overheating.
    9. Circuit Labels and Documentation: Proper labeling and documentation of circuits are important for maintenance and safety. BS 7671 outlines requirements for labeling and record-keeping.

    It’s important to note that regulations and standards may be updated over time, so it’s essential to consult the latest version of BS 7671 and any local regulations or codes that may apply to your specific location or type of installation. Additionally, electrical work should be carried out by qualified and competent electricians to ensure compliance with safety standards.

     






    © 2026 Electrical4less
    We accept Visa We accept Mastercard We accept Maestro We accept PayPal We use Amazon Pay We use Apple Pay We use Google Pay
    Next Day Delivery

    Cut-Off Time and Order Information
    To ensure your order qualifies for next day delivery, please place your order by 3:00 PM. This is subject to all items being available on the shelf at the time of your order. For orders where the total value exceeds £150 + VAT (double our standard carriage-paid order value of £75 + VAT), we are happy to split the delivery into two shipments if some items are needed urgently and others are not immediately available. If you have any questions or need further assistance, feel free to reach out to us via WhatsApp for live support. We’re here to help!

    In Stock Delivery Policy

    Free Next-Day Delivery Over £75 + VAT:
    Orders above £75 + VAT qualify for free next-day delivery via DPD for in-stock items. While we strive for timely dispatch, we recommend placing orders early to avoid potential delays. Once dispatched, unexpected issues may arise despite the courier’s efforts.

    Orders Below £150 + VAT:
    To keep costs manageable, we dispatch your order once all items are ready, including products with longer lead times.

    Need items faster? You can pay for an additional delivery service to receive in-stock items sooner. Simply email us with your order details, and we’ll send you a payment link for the extra delivery cost.

    Orders Above £150 + VAT:
    For larger orders, we can split delivery at no extra cost. In-stock items will be sent immediately, with the remaining items dispatched once available.

    Backorder Delivery Policy

    Items with Lead Times (e.g., 1–3 Working Days):
    This means we need to source the product from our supplier before sending it to you. The estimated dispatch time is displayed on each product page.

    Out of Stock at Supplier:
    If an item is unavailable at the supplier, we will contact you promptly. You’ll have the option to choose an alternative product or request a full refund.

    Didn't find what you're looking for?

    No problem — message us directly on WhatsApp and we’ll help you out.

    We usually respond within minutes during working hours.

    Cookie Preferences
    Our website uses cookies and by using the site you agree to this. To find out more about how we use cookies please view our Privacy Policy.